L Carnitine 1500 mg with Vitamin B Promote Physical Performance MaxionNutrition L Carnitine 5000 L carnitine is an amino acid that is produced in your body that helps the body turn fat into energy. Carnitine is found in nearly all cells of the body and researchers have Mitochondria function & Energy I L Carnitine I Life Extension What even is carnitine?? Carnitine is a "conditionally" essential amino acid that becomes essential during pregnancy. What does this mean? You must get carnitine through food! The best sources are red